Mt. Williamson Sat, Jun 15, 2002 With: Joe Hanssen Justin Wasielewski		Etymology	Story	Photos / Slideshow	Map	Profile
		later climbed Tue, Jul 9, 2002

Williamson, of the U. S. Topographical Engineers, was assistant to Capt. W. H. Warner in 1849, and in 1853 was a member of the Pacific Railroad Survey.
- Erwin Gudde, California Place Names

"'Farther observatons, by Mr. King, showed that a point about two miles northeast of Mount Tyndall was a little higher than this mountain; it was named in honor of Major R. S. Williamson, of the United States Engineers, so well known by his topographical labors on the Pacific coast, especially in connection with the United States railroad surveys.' (Whitney, Geology, 382.)

Robert Stockton Williamson (1824-1882) led an expedition in 1853 to explore the passes across the southern Sierra Nevada to find a suitable route for a railroad. (Pacific Railroad Reports, vol. V.)"
- Peter Browning, Place Names of the Sierra Nevada